AA CC feature all of the characteristics that have made AA renowned –superior design, reliable performance and comprehensive technical support. BB are designed to manage high radial loads and perform consistently, even when misalignment, marginal lubrication, contamination,extreme speeds and critical application stresses are present.

• Bearings are available with a tapered bore for adapter-typemounting. To order, add the suffix “K” to bearingnumber (e.g., 23120K).• Consult your AA sales engineer for up-to-dateinformation about the availability of the bearings youhave selected.

BB operate in a wide range of applications and environments.In most cases, bearing operating temperature is not an issue.Some applications, however, operate at extreme speeds or inextreme temperature environments. In these cases, care must be taken not to exceed the temperature limits of the bearing. Minimum temperature limits are primarily based on lubricantcapability. Maximum temperature limits are most often based on material and/or lubricant constraints, but also may be based on accuracy requirements of the equipment that the bearingsare built into.

Used BB and related components often can be returned to their original specifications with less time and costs than purchasing new. We offer complete remanufacture and reconditioning services for many components, including bearings, chocks, housings, rolls and more.Our gearbox repair services are globally recognized for powerm transmission solutions in heavy industrial markets, repairing virtually any large gearbox make or model, with on-siteemergency breakdown service available if needed. Timken offers a full range of maintenance and reconditioning services through our remanufacturing and repair operations.Using these services can lead to improved plant efficiency and reduced overall production costs.

Analysis on the routine maintenance and troubleshooting of centrifugal pumps 1 Basic working principle of centrifugal pump The centrifugal pump is designed according to the principle of centrifugal force. The driving motor drives the impeller to rotate...